Class-Type architecture
Class-Type ??? Architecture Based on the Layer mode. Basic concept: ??? A class in a layer can only interact with the class in the same level or adjacent layers. Important: ??? By ban The user layer directly accesses information existing in the persistent mechanism, and you can use the user layer and the lasting structure to decouple. Tip: ???????????? User interface class should not directly access the persistent mechanism ?? ???????????????????? business object should not directly access the long-lasting mechanism. ?????????????????????? Class-Type architecture is independent of hardware / network structure
